Combined lifting and moving jack.



O f Q @A www A. W. WAITEPORD. COMBINED LAFTING AND MOVING JACK.

APPLIOA'TIONVFILED DEO. 28. 1906.

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ALEXANDER W. WHITEFORD, OFA OMAHA, NEBRASKA.

COMBINED LIFTI-NG AND MOVING JACK.

Specification of Letters Patent.

Patented Dec. 1Q, 1907.

Application filed December 28. 1906. Serial No. 349.841.

To all whom it may concern:

Be it known that I, ALEXANDER W. WHITEFORD, citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have Linvented certain new and useful Improvements in Oombined Lifting and Moving Jacks, of which the following is a specification.

This invention aims to devise a jack which may be used either for lifting or moving objects or for performance of both operations .at one time, the device being of novel and peculiar structural arrangement adapting it for either urpose or for both operations with a singfe operating lever and adjunctive parts,the same being interchangeable and shiftable from one position to another according to whether the jack is employed for lifting or ,for moving the load or other object.

In its formation, the jack comprises a base, an upright, a lifting bar mounted upon said upright, and means for positively moving either the lifting bar or the upright upon the base, said means being shiftable and reversible according to the particular purpose.r

For a full description of the invention and the merits thereof and also to acquire va knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings.

While the invention may be' adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or essential features thereo still -the preferred embodiment is shown in the accompanying drawings, in which:

Figure 1 is a side viewl of a combined lifting and moving jack embodying the invention, the full lines indicating the actuating means in position for operating the lifting bar and the dotted`lines showing the position ofthe actuating means in position for moving the upright along the base. Fig. 2 is a side view of the base, the upright being removed. Fi 3 is a transverse section of the base on the ine -x of Fig. 2. j

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference. characters.

The lifting mechanism may be of any con-v struction commonly provided for elevating loads or lifting heavygobjects, a base 1 being provided tocoperate with the lifting mechanism, the latter to move thereon and directed in its movements and prevented from relative lateral displacement, suitable guides being provided between the two.

The lifting jack proper comprises an upright or standard 2 .and a lifting bar 3, the upright being hollow and the lifting bar adapted to move vertically therein and provided at or near its lowerl end with a foot 4 and at its upper end with a head 5. A series of teeth 6 are provided along one edge of the lifting bar and are adapted to be engaged by a detent pawl 7 to hold the lifting bar in adjusted position and by a lifting pawl to effect upward movement of the said bar 3 when oscillating the operating lever. The detent pawl 7 is fast to a shaft 8 mounted in opposite sides of the upper portion of the part 2 and has a projection 9 upon its outer side to receive a lever or other instrument should it be required to apply force to effect disengagement of the pawl from a tooth of the lifting bar. A weighted arm 11) is attached to the projecting end of the shaft S and is arranged to normally hold the pawl 7 in engagement with the toothed portion of .the lifting bar. The weighted lever 10 may also be used as means for throwing the pawl out of action when required.

The operating lever 11 may be of metal or consist of a wooden bar and a metal end, the latter having a socket formed in one end to receive the wooden bar. The operating lever is provided at or near its extremity with a fulcrum 12 `which may consist of a pin removably fitted in a transverse opening, or of laterally extended trunnion's. The o erating lever is detachably fitted in the upright 2 so as to be shiftable or moved from one osition to another according as the lifting ar 3 is to be elevated or the upright is to be moved upon the base 1. Bearings 13 are provided at one side of the upright at any convenient point in the length thereof and said bearings Amay either be closed or open, the purpose being to admit of ready detachment of the operating lever or to provide for replacing the same. In the event of the bearings 13 being openat their upper sides, the fulcrum 12 will preferably consistA of laterally eX- tended trunnions and in this construction the operating lever may either be lifted when it is required to detach it from the bearings or it may be dropped into position when adjusting the same to the upright preliminary to operating the lifting bar to elevate the load or object to be raised. The lifting pawl 14 is pivotally connected to the operating lever adjacent to its fulcrum 12, said lifting pawl inclining towards the lifting bar at its upper end so as to engage with the teeth thereof and cause the bar 3 to rise when raising the outer end of said operating lever. A web 16 arranged at one side of the lever adjacent to its fulcrum and opposite to the lifting pawl 14, serves to strengthen the lever and to provide a stop to limit the movement of the lever in one direction either downwardgas shown by the full lines in Fig 1, or upward, as indicated by the dotted lines in said figure. A dog 17 is pivoted at one end to a side of the operatingy lever and is adapted to make connection with any object or work to be moved in a direction about parallel with the base 1, said dog being constructed to be engaged directly with the object or to be connected therewith by means of a chain, cable or like attaching means.

The base 1 may be of any .length and Width and forms a bed or sup ort upon which the lifting jack is placed W en an object or work is to be moved laterally. Guides 18 are located upon the top side of the base and consist of vertical flanges having their upper portions inturned to engage over opposite edges of the foot of the upright 2 and thereby hold the lifting jack upon the base against vertical and lateral displacement and direct the same in its movements upon the base. The base has a medial portion toothed, as indicated at 19, said toothed' portion being preferably raisedin order to strengthen the base and admit of the operating pawl making positive engagement with the teeth when oscillating the lever to effect lateral movement of the lifting jack. Longitudinal ribs v20 are arranged upon the lower side of the base and serve to strengthen the same and also to penetrate the earth and prevent lateral movement of the base when the lifting jack is mounted thereon and in operation. A series of wings 21 are pendent from the lower side of the base and are slightly curved in their length preferably in an opposite direction to the forward movement of the lifting j ack so 'as to prevent rearward displacement of the base when forward pressure is applied to the lifting jack to move it and the load attached thereto. A loop 22 is likewise provided upon the lower side of the base 1 and constitutes a handle and also assists in anchoring the base, thereby supplementing the action of the wings 21 and the ribs 20.

The upright 2 of the lifting jack is provided near its lower end with bearings 23 similar in formation to the bearings 13 so as to receive the fulcrum 12 ofthe operating lever 11. `When the operating lever is fitted to the bearings 13, the operating pawl 14 extends upward, but when the operating lever is fitted to the bearings 23 thepawl 14 is pendent therefrom, that is, in reverse position from that which it occupies when the lever 11 is fitted to the bearings 1 3. Then it is required to move an object, such as a rail, car or the like, the same is suitably connected with the lifting ack and the latter is mounted upon the base 1, the operating level' being fitted to the bearings 23 and the pawl 14 arranged to engage with the teeth 19. Upon depressing the outer end of the operating lever, the pawl 14 engaging with one of the teeth 19 causes the lifting jack to move forward and to correspondingly advance the object connected therewith. lf it be required to elevate a load or a piece of work, the lifting jack may be detached from the base 1 and the load applied either to the foot 4 or to the head 5. ing been fitted to the bearings 13 with the pawl 14 in engagement with the teeth 6 of the lifting bar, upward movement of the outer end of the operating lever will effect a corresponding lifting of the bar 3, the same being held in the elevated position by means of the detent pawl 7. Should the work be of such nature as to require both lifting and moving, the jack is mounted upon the base 1, the operating lever being fitted in the bearings 13 and the load applied to either the foot 4 or the head 5 is elevated by operating the lever 11 and is held in the raised position by the awl 7. To move the load or work thus heid suspended, the operating lever is removed from the bearings 13 and fitted to the bearings 23, and upon oscillating said lever, the lifting ack is moved upon the base carrying the load with it, as will be readily understood.

Having thus described is claimed as new is:

`1. A combined lifting and moving jack, comprising a base, an upright mounted to slide on said base, a lifting bar movable in said upright, said upright being formed with upper and lower fulcrum bearings, and an operating lever provided with a fulcrum adapted for removable support in either one of said bearings, and provided with a part adapted to engage the base with the lever fulcrumed in the lower bearing of the upright and to engage the lifting bar with the lever fulcrumed in the upper bearing of said upright.

2. In a device of the character specified, the combination of a lifting j ack, a base therefor having a longitudinal raised portion toothed upon its upper side and having longitudinal inturned flanges forming guides and provided with pendent anchoring wings and longitudinal strengthening ribs, and with a loop shaped handle, and actuating means the invention, what The operating lever havcoperating With the toothed portion of the base to effectiorward movement of the jack thereon.

being provided With a. pawl adapted for engagement With either rack according to the location of the ulcrum of said lever in the 3. In combination, a base provided With a up er and lo'Wer bearings of the upright.

rack bar, an upright slidable on said base and provided With upper and lower fulcrum bearings, a. lifting bar mounted to slide in said upright and provided' With a rack, and an operating lever provided with a ulcrum and adapted for interchangeable mounting in the bearings of the upright, said operating lever n testimony whereof I affix my signature in presence of tWo Witnesses.

ALEXANDER W. WHITEFORD. [u s] Witnesses:

T. G. STACK, I. I. GUNN. 

